Pacific Northwest, United States
    Kellett Bluff Voluntary No-take

    Arachne Reef

    Best months: Jun–Oct

    Protected Area

    Kellett Bluff Voluntary No-take

    Why dive here

    With 35+ marine species recorded in the area - including humpback whales, orcas and seals & sea lions - Arachne Reef offers some of Pacific Northwest's richest reef diving. Water ranges 7-17°C, warmest July, August, September.

    Marine lifeHumpback Whales, Orcas and Seals & Sea Lions · 35+ species recorded
    Water7-17°C · warmest July, August, September
    CharacterReef dive

    Arachne Reef is one of those spots that just keeps giving. We’ve logged countless dives here and it never fails to surprise. Drop down, and you’re instantly enveloped in a forest of kelp, swaying gently in the subtle surge. The light filters through, painting shifting patterns on the rocks below. We’ve spent whole dives just watching the ballet of the Snake Pricklebacks weaving through the fronds, or spotting the brilliant orange of a Sweet Potato Sea Cucumber clinging to the rock face. Our favourite time to dive Arachne is on a slack tide, early in the morning. That’s when the resident Red Rock Crabs are most active, scuttling across the seabed, and you often catch the smaller Humpy Shrimp and Shortscale Eualids out foraging. Look closely into the crevices and you’ll find Prickly Sculpins perfectly camouflaged. We’ve even been lucky enough to hear the distant calls of Orcas from the surface, though seeing them underwater is a rare treat. It’s a site that rewards slow, meticulous divers. Expect to come up a little colder but absolutely buzzing with what you’ve seen.

    Today05:1919:1513h 56m daylightGolden hour 18:32

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    Conditions

    Ocean conditions, forecast and tides for Arachne Reef

    Arachne Reef Ocean Conditions

    Monthly averages for Arachne Reef, sourced from NOAA buoy & Copernicus Marine data - nearest station: 9449880 - Friday Harbor, WA (27km away)

    August Averages

    Sea Temperature

    16.51°C

    62°F · Range: 10.5–15.6°C

    Air Temperature

    15.7°C

    60°F

    Current Speed

    11.4 cm/s

    Direction: SE (127.9°)

    Salinity

    20.02 PSU

    Wind Speed

    1.6 m/s

    3.1 knots

    Atmospheric Pressure

    1016.6 hPa

    Based on 5 years of monitoring data · Data sources: NOAA NDBC + Copernicus Marine (EU)

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